Primary Sources

noun a historical account or biography written from personal knowledge or special sources

• The author's memoir detailed his experiences during the war.
• I read a really interesting memoir about a woman's travels around the world.
• That memoir was lit, I couldn't put it down!
• Her memoir was like a window into her soul, revealing all her innermost thoughts and feelings.

noun a book that is used as a primary source of information

• The source book provided detailed information on the history of the ancient civilization.
• I found all the answers in the source book for my research project.
• I'll just skim through the source book to get the main points.
• The source book of wisdom is said to be experience.